Dynamics Physics Worksheet with answers PDF

Preview

Summary

Physics work sheet with answers no explanation...

Description

1. A child on a sled is sliding down a snow-covered hillside. The child and the sled together have a mass of 50.0 kg, and the slope is at an angle of 30 degrees to the horizontal. Find the child’s acceleration if: a. There is no friction (4.9 m/s2) b. The coefficient of kinetic friction is 0.15 (3.6 m/s2) 2. Three blocks of masses m1 = 26 kg, m2 = 38 kg, and m3 = 41kg, are connected by two ropes over two pulleys as shown in the figure.

a. Determine the acceleration of the blocks. Label the direction the blocks are moving in. (1.4 m/s2, m2 will move to the right) b. Determine the tension in each of the strings. (290 N, 340 N) 3. A box (A, m = 2.5 kg) is connected by a string over a frictionless pulley to box B (m = 5.5 kg), as shown in the figure. The coefficient of kinetic friction between Box A and the incline is 0.54.

a. What is the acceleration of the boxes? (3.8 m/s2) b. Find the tension of the string. (33 N) 4. A plane is flying in a vertical loop of 1500 m radius. At what speed is the plane flying at the top of the loop, if the vertical force exerted by the air on the plane is zero at this point? (120 m/s) 5. An object of mass 3.0 kg is whirled around in a horizontal circle of radius 1.3 m with a constant speed of 6.0 m/s. Calculate the tension of the string. (83 N)...