A car of mass 1000kg in Fig 6 is being towed by a truck in an incline of 10° at constant speed. The frictional force acting on the car is 200N as it travels up the slope. Calculate the work done by the steel bar to pull the car from point A to B. 10° car steel bar truck 120m -ground

1. A 5kg block is push up a rough, inclined surface by a constant force of 20N. The surface is inclined at an angle of 15° and the force is applied completely horizontally and parallel to the ground below the incline. (Not parallel to the inclined surface). As a result, the velocity of the block increases from 0 m/s to 4 m/s in a displacement of 10m. A)What work was done by the frictional force during this displacement? B)What would have been the final velocity if friction was not present? C) Why was the final kinetic energy without friction higher than the total kinetic energy with friction?

A sled dog pulls on a sled with a constant force of 140 N at an angle of 23 degrees to the direction of motion of the sled. If the sled moves 5.2 m forward in 1.7 seconds while the dog is pulling, how much power is the dog delivering to the sled? B90 W 550 W 1700 W 47 W

Q30