Answer the follwing questions The bobsled track at the 1994 Olympics contained turn with radii of 33 m. Find the centripetal acceleration at the turn for a speed of 340 cm/sec. What is the maximum speed at which a car can safely negotiate an unbanked turn with radius of 60 m in icy weather, where the coefficient of static friction is 0.10? An 8 kg block initially at rest is pulled to the right along a horizontal surface whose coefficient of friction 0.1by a constant force of 34 N. Find the speed of the block after it has moved 2 m.

Banked curves are designed so that the radial component of the normal force on the car rounding the curve provides the centripetal force required to execute uniform circular motion and safely negotiate the curve. A car rounds a banked curve with banking angle ? = 23.2° and radius of curvature 168 m. (a) If the coefficient of static friction between the car's tires and the road is ?s = 0.393, what is the range of speeds for which the car can safely negotiate the turn without slipping? vlow=?  m/s. vhigh= ? m/s  b)What is the minimum value of ?s for which the car's minimum safe speed is zero? Note that friction points up the incline here.

A small airplane of mass 800 kg is doing a horizontal turn. The turn requires the pilot to bank the plane with an angle =38° as shown in the figure. What is the force providing the centripetal acceleration in the airplane. OL sin (8) O the force of gravity Fg OLcos (8)

A race car rounds a curve at 53 m/s. The radius of the curve is 450 m, and the car's mass is 670 kg. (Assume the car's speed remains constant. Take the radially inward direction to be positive. Indicate the direction with the sign of your answer.) (a) What is the car's (centripetal) acceleration? m/s² What is it in q's? (b) What is the centripetal force acting on the car?

A 1 500-kg car moving on a flat, horizontal road negotiates a curve as shown in the overhead view in 6.4a. If the radius of the curve is 35.0 m and the coefficient of static friction between the tires and dry pavement is 0.523, find the maximum speed the car can have and still make the turn successfully.

Helicopter blades withstand tremendous stresses. In addition to supporting the weight of the helicopter, they are spun at rapid rates and experience large centripetal accelerations, especially at the tip. The tip of a 4.00 m long helicopter blade that rotates at 5 Hz. (a) What is the linear speed of the tip of the blade? (b) What is the centripetal acceleration at the tip? (c) How many g’s is this?

A hockey puck that has a mass of 0.150 kg is tied to a light string and spun in a circle of radius 1.15 m on frictionless ice. If the string breaks under a tension that exceeds 4.00 N, what is the maximum speed vmax of the puck without breaking the Umax = m/s string?

High-speed ultracentrifuges are useful devices to sediment materials quickly or to separate materials. An ultracentrifuge spins a small tube in a circle of radius 10.5 cm at 60000.0 rev/min. What is the centripetal force experienced by a sample that has a mass of 0.00330 kg?

An engineer is trying to determine the speed at which a car can travel around a curved race track without using any friction, Assume the car does not move up or down the incline and completes a horizontal circle. Complete all calculations under these circumstances. Hint: Use the variable m for the mass of the car, it will cancel! number of forces in plane: centripetal force: 340m Are all forces balanced? 160 What is the magnitude of the centripetal acceleration? unit At what speed does the car need to travel? unit finalize check answers cannot be determined (after completing ALL problems) Unit 10: circular motion, challenge Desmos Scientific Online Calculator hp esc HAAR @ #3 2$ & 96

A 2.0kg ball swings in a vertical circle on the end of an 80cm long string. The tension in the string is 20N when its angle from the highest point on the circle, 0, is 30deg. a) What is the ball's speed when 0-30deg? b) What are the magnitude and direction of the ball's acceleration when 0=30deg?