A child weighing 140 N sits at rest at the top of a playground slide that makes an angle of 25 with the horizontal.The child keeps from sliding by holding onto the sides of the slide. After letting go of the sides, the child has a constant acceleration of 0.86 m/s2 (down the slide, of course). (a) What is the coefficient of kinetic friction between the child and the slide? (b) What maximum and minimum values for the coefficient of static friction between the child and the slide are consistent with the information given here?

Q: A car drives onto a section of the road which is covered in ice. The driver attempts to stop by…

A: stopping distance(s)=60m initial speed(u)=40 km/h=40×1000 m3600 sec=11.1111 m/sec final speed(v)=0…

Q: A heavy, rough crate sits on an inclined plane. The weight of the crate is 60N.  The plane is…

A: For solving this problem first we need to draw free body diagram of object and then compare the…

Q: Suppose a 4.32 kg crates sits in a ramp. The ramp makes a 37.0 degree angle with the horizontal. The…

A: Given: Mass of crates (m) = 4.32 kg Angle of inclination (θ)= 37.0 coefficient of static friction…

Q: a) A delivery truck with two stacked crates in the back brakes quickly. The crate on the bottom just…

A: GIVEN: top crates Mass m = 27kgand the mass of bottom creats 22kgcoefficient of static fraction…

Q: A 3.3 kg block is on an incline with a coefficient of static friction of 0.50. The angle that the…

A: Let m be the mass of the block, g be the acceleration due to gravity, θ be the angle of inclination,…

Q: I am travelling along a flat highway at 60mi/hr (26.8 m/s). (a) If the coefficient of friction…

A:

Q: A 94.4-kg baseball player slides into second base. The coefficient of kinetic friction between the…

A:

Q: A large crate has a mass of 120 kg and sits on a horizontal floor. You push on the crate with a…

A:

Q: The coefficient of static friction between a block and a horizontal floor is 0.47, while the…

A: Given data The block mass is: m = 4.2 kg The coefficient of static friction is: μs = 0.47 The…

Q: A person pushes a 0.20 kg lunch tray across a table, and it slows down as it slides because of…

A: Mass of lunch tray = 0.2 kg  Coefficient of static friction = 0.15  Coefficient of kinetic friction…

Q: A 3.47 kg block is placed at one end of a wooden plank that is 9.05 m long. The plank is slowly…

A:

Q: A 3 kg box rests on a horizontal table. It is attached to a 2 kg box via a pulley. The 2 kg box…

A:

Q: A car is traveling at 46.0 mi/h on a horizontal highway. (a) If the coefficient of static friction…

A: Given Data: Initial speed of the car (u) = 47 mi/h = 21.0 m/s. Final speed of the car (v) = 0 m/s.…

Q: A suitcase lies on a horizontal shelf in a train that slows down and its speed decreases steadily…

A: According to the Newton’s second law of motion, the net force acting on an object at equilibrium is…

Q: A hockey puck is sliding across a level frozen pond with an initial speed of 7.9 m/s. Friction is…

A:

Q: A man is pulling two boxes, one on top of the other, up the ramp shown by pulling on a rope parallel…

A: We need to find out the magnitude of the maximum acceleration the man can pull the boxes up the ramp…

Q: A person drags a crate along the floor with a rope, which makes a 40.0 degree angle with the…

A:

Q: A M1 =1000-kg car is on a rough ramp that is inclined at θ = 20° above the horizontal. It is…

A:

Q: A book resting on a sheet of ice is given an initial speed vi in the +x-direction. The coefficient…

A: Given quantities: initial velocity = vi  coefficient of kinetic friction = μk acceleration due to…

Q: Problem 6: At a post office, a parcel that is an m kg box slides down a ramp inclined at an angle…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: A man exerts a horizontal force of 127 N on a crate with a mass of 38.2 kg. HINT (a) If the crate…

A: The horizontal force is F=127 N The mass of the crate is m=38.2 kg Calculating the weight of the…

Q: A car is traveling at 50.0 km/h on a flat highway. (a) If the coefficient of friction between road…

A: By using Newton’s second law in the horizontal direction We can write, For distance

Q: You managed to pull a heavy crate up a ramp on a truck. The crate has mass 50 kg. You were pulling…

A: Force applied (F)= 480 N Coefficient of kinetic friction (µk)= 0.49 Mass of crate(m)= 50 kg Angle of…

Q: You are at the grocery store pushing on a shopping cart. The mass of the cart including all the…

A: Given Data : The mass of the cart is given as mc = 26 Kg. The coefficient of friction between the…

Q: A 55-kg box rests on a horizontal surface. The coefficient of static friction between the box the…

A: The mass of the box=55kg.The coefficient of static friction =0.30.The coefficient of kinetic…

Q: A person is dragging a packing crate of mass 74.9 kg across a rough horizontal floor where the…

A: Here given that the person dragged a mass 74.9 kg by a force F at an angle 43° . The kinetic…

Q: A heavy box of mass M is found at rest on an inclined loading ramp as indicated in the figure. The…

A:

Q: A 50 kg wooden crate rests on a horizontal concrete floor. The coefficient of friction is Ms= 0.7.…

A: Frictional force can be expressed as fs=μsN

Q: A 93.6-kg baseball player slides into second base. The coefficient of kinetic friction between the…

A: Given value--- mass = 93.6 kg. coefficient of kinetic friction = 0.632. We have to find---  (a)…

Q: A 4000-kg car is being towed up a smooth frictionless incline ramp inside a truck by chains at a…

A: Given data:- The mass of the car is M = 4000 kg. The angle made by the ramp is θ = 53o. The angle…

Q: A small girl is pushing a wagon of a mass 20kg along the sidewalk. The girl is pushing on the wagons…

A: The sum of forces acts along the direction of the wagon is ∑Fx=0Fcosθ-f=0 rearrange it for…

Q: A 4.98-kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic…

A: Given : Mass of thr box (m) = 4.98 kg Coefficient of kinetic friction (µk) = 0.393 The equation for…

Q: n 80 kg log is sliding along a flat section of ground at constant velocity with a coefficient of…

A:

Q: A student of mass 55.4 kg, starting at rest, slides down a slide 21.2 m long, tilted at an angle of…

A: We are given mass of student. We are also given angle of slide on which student slides. We are given…

Q: You are lowering two boxes, one on top of the other, down the ramp shown in the figure by pulling on…

A:

Q: A 397 N crate rests on a ramp; the maximum angle just before it slips is 33° with the horizontal.…

A: Given Data : Weight of the crate is W=397 N. Angle of inclination of the ramp θ=33°.   Let the…

Q: A block is placed on a wooden plank, which is initially horizontal. One end of the plank is slowly…

A:

Q: A car is traveling at 51.0 km/h on a flat highway. (a) If the coefficient of friction between road…

A:

Q: The coefficient of static friction between block A and a horizontal floor is 0.470, and the…

A: At the instant the two blocks start moving, the horizontal component of the net force on each block…

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: