(I) At the surface of a certain planet, the gravitational acceleration g has a magnitude of 12.0 m/s2 A 24.0-kg brass ball is transported to this planet. What is (a) the mass of the brass ball on the Earth and on the planet, and (b) the weightof the brass ball on the Earth and on the planet?

Q: (II) At what distance from the Earth will a spacecraft traveling directly from the Earth to the Moon…

A: (II)

Q: (II) What average force is needed to accelerate a 9.20-gram pellet from rest to 125 m/s over a…

A: Given data:Note: 1000 gm =1 kg.mass of pellet (m) = 9.20 gm = 9.20×10-3 kg.Initial velocity (u) = 0…

Q: A string of length 10 m carries a bob with a period 2π sec. Calculate angle of inclination of string…

A: We need to compute-(i) Angle of inclination θ=?(ii) Tension in the string T1=?The data given…

Q: (II) Drag-race tires in contact with an asphalt surfacehave a very high coefficient of static…

A:

Q: (II) Tarzan plans to cross a gorge by swinging in an arc from a hanging vine (Fig. 5–42). If his…

A: Tarzan plans to cross a gorge by swinging in an arc from a hanging vine. at lowest point being at…

Q: (I) Suppose you are standing on a train accelerating at 0.20 g. What minimum coefficient of static…

A:

Q: (II) A 2.0-kg silverware drawer does not slide readily. The owner gradually pulls with more and more…

A:

Q: (II) Can cars “stop on a dime”? Calculate the acceleration of a 1400-kg car if it can stop from…

A:

Q: (I) A force of 35.0 N is required to start a 6.0-kg box moving across a horizontal concrete floor.…

A: When a frictional force acts between two bodies in contact but are not moving with respect to each…

Q: (II) A small box is held in place against a rough verticalwall by someone pushing on it with a force…

A: Given - The force F = 23 N, is applied on box to prevent the sliding of box , at angle θ = 28o with…

Q: 8. (II) How large must the coefficient of static friction be between the tires and the road if a car…

A: Given Radius of the curve r = 125 m speed of the car v = 95 km/h To find the coefficient of static…

Q: A Ping-Pong ball is shot into a circular tube that is lying flat (horizontal) on a tabletop. When…

A: A ping pong ball in the circular tube

Q: A child on a sled comes flying over the crest of a small hill, as shown in Fig. 5–32. His sled does…

A: When the child is on a level surface, the normal force between its chest and sled is equal to the…

Q: An unmanned multi-stage ARC rocket, carrying a weather satellite, is launched towards the planet…

A: The unmanned rocket powered by its boosters is launched from the surface of the earth, towards the…

Q: (II) A child on a sled reaches the bottom of a hill with a velocity of 10.0 m/s and travels 25.0 m…

A:

Q: (1) A skier of mass m slides up a hill for a distance d along surface coved with snow till it shops.…

A: Given Force ( f ) = ρv2 Angle       = θ

Q: (II) A 14.0-kg bucket is lowered vertically by a rope in which there is 163 N of tension at a given…

A:

Q: 5) A 58kg satellite is orbiting another planet at a distance of 480,000 km from the center of the…

A: Solution

Q: A car maintains a constant speed v as it traverses the hill and valley shown in Fig. 5–34. Both the…

A: a. the net force on the point A is

Q: A proposed space station consist set of a circular tube that will rotate about its center (like a…

A: Given,

Q: (II) A Ferris wheel 22.0 m in diameter rotates once every12.5 s (see Fig. 5–9). What is the ratio of…

A:

Q: (II) A jet pilot takes his aircraft in a vertical loop (Fig. 5–38). (a) If the jet is moving at a…

A:

Q: (II) A car can decelerate at -3.80 m/s2 without skidding when coming to rest on a level road. What…

A: tIt is given that,

Q: (II) You know your mass is 62 kg, but when you stand on abathroom scale in an elevator, it says your…

A:

Q: Calculate the value of acceleration due to gravity at a point (a) 50 km above the earth's surface…

A:

Q: (II) A particular race car can cover a quarter-mile track (402m) in 6.40s starting from a…

A: We have to determine the acceleration experienced by the driver, and the horizontal force exerted by…

Q: (II) On an icy day, you worry about parking your car in your driveway, which has an incline of 12°.…

A: The freebody diagram of the given situation is represented as,

Q: (1) Would the coefficient of friction of a 3wheeled car be less than that of a 4 wheeled car,…

A: Answer:- The coefficient of friction of a 3wheeled car be same of a 4 wheeled car. Because friction…

Q: (II) A coin is placed 13.0 cm from the axis of a rotating turntable of variable speed. When the…

A: The coin is placed on the turntable. Thus, the normal reaction on the coin will be the same as the…

Q: Astronauts who spend long periods in outer space could be adversely affected by weightlessness. One…

A: We are able to stand on earth because the net vertical force on us is zero due to balancing of…

Q: (II) A 12.0-kg monkey hangs from a cord suspended fromthe ceiling of an elevator. The cord can…

A:

Q: 6) a 2000kg pick up truck experiences 150N of air resistance and a 200N of rolling resistance (this…

A: a)The car is travelling at a constant speed 30m/s. Thus, the car will not have any acceleration.…

Q: (II) On an ice rink two skaters of equal mass grab hands andspin in a mutual circle once every 2.5…

A: Time taken to complete one complete one circle is 2.5 s, the length of the arm is 0.80 m, and the…

Q: (I) If the coefficient of kinetic friction between a 22-kg crate and the floor is 0.30, what…

A:

Q: (II) How large must the coefficient of static friction bebetween the tires and the road if a car is…

A: The speed of the car, v=95 kmh×1000 m1 km×1 h3600 s=26.4 m/s   The radius of the curve, r=125 m…

Q: (II) A bucket of mass 2.00 kg is whirled in a vertical circle of radius 1.20 m. At the lowest point…

A: Given: The mass of the bucket is 2.00 kg. The radius of circle is 1.20 m. The tension at the lowest…

Q: 1000-kg car rounds a curve on flat road of radius 50 m at a speed of 50 k/h. Will the car make the…

A: 1000-kg car rounds a curve on flat road of radius 50 m at a speed of 50 k/h. Will thecar make the…

Q: Two snowcats in Antarctica are towing a housing unit north, as shown in Fig. 4–50. The sum of the…

A:

Q: If the Earth shrank to one-half its present radius, but kept its mass constant, what effect would…

A: Acceleration due to gravity on earths surface, g0=GMR2

Q: (II) The coefficient of static friction between hard rubber and normal street pavement is about…

A: Given - The coefficient of static friction between  hard rubber and normal street pavement , μs =…

Q: 1. Two blocks are connected by a massless rope as shown below. The mass of the block on the table is…

A:

Q: If the mass of the Earth were doubled while at the same time its radius remained constant, by what…

A: Given data:  New mass of the earth (M') = 2M Radius is constant Required: The new acceleration due…

Central Force

Central force is the force that acts along the center of mass of one body to the center of mass of another body. Its direction from or away from a point on a body to another is called the center of the force. Such forces include gravitational force between two massive objects or electrostatic forces between two charged particles. So from atoms to planets, the central forces play an important role in shaping our daily lives. One of the remarkable features of central forces is that they are conservative, i.e. the total energy of a central force system can always be expressed as a gradient of a potential energy function.