A car with a weight of 5 N is observed at the top of the loop. Determine the normal force on the car when at the top of the loop if its mass is 1 kg and the centripetal acceleration is 8 m/s/s.

Roger pushes a box on a 30° incline. if he applies a force of 60 newtons parallel to the incline and displaces the box 10 meters along the incline, how much work will he do on the box? a. 5.2 × 102 joules b. 6.0 × 102 joules c. -5.2 × 102 joules d. -6.0 × 102 joules