Posted by Ricky on Wednesday, July 7, 2010 at 6:53pm.
1. How far (in meters) must a 600 kg pile driver fall, if it is to do 14000 J of work?
2. A spring whose spring constant is 150 N/m is compressed 0.800 m. What speed (in meters/second) can it give to a 0.600 kg ball when released?
3. A 550 N crate rests on the floor. How much work in joules is required to move it at constant speed 4.0 m along the floor, against a friction force of 140 N?
4. What is the minimum work in joules needed to push a 1710 kg car 74.0 m up a 12.5 degree incline? (Ignore friction.)
5. How much work in joules must be done to stop a 3000 kg car traveling at 150 km/hr?
6. A 1620 kg car rolling on a horizontal surface has a speed of 70 km/hr when it strikes a horizontal coiled spring and is brought to rest in a distance of 5.5 m. What is the spring constant (in N/m) of the spring? (Ignore nonconservative forces such as friction.)
7. A spring has a spring constant "k" of 160 N/m. How much must this spring be compressed (in meters) to store 70 J of energy?
8. Tarzan is running at a top speed of 5.0 m/s and grabs a vine hanging vertically from a tall tree in the jungle. How high (in meters) can he swing upward?
9. An object slides down a frictionless 33 degree incline whose vertical height is 87.0 cm. How fast is it going in meters/second when it reaches the bottom?
10. A 33 kg child descends a slide 7.8 m high and reaches the bottom with a speed of 3.30 m/s. How much thermal energy (in joules) due to friction was generated in this process?
11. Two railroad cars, each of mass 6800 kg and traveling 80.0 km/hr, collide head-on and come to rest. How much thermal energy in joules is produced in this collision?
Answer this Question
Related Questions
physics - How far (in meters) must a 800 kg pile driver fall, if it is to do ...
physics - 1. How far (in meters) must a 600 kg pile driver fall, if it is to do ...
physics - how do i solve this, i tried dividing the mass by the height, but its ...
Physics - Hi I really need help with this question... please provide a step by ...
physics - a pile drive has a 413 kg block that is lifted 1.4m and then dropped ...
physic - A 2,300-kg pile driver is used to drive a steel I-beam into the ground...
physics - when a 2.50 kg object is hung vertically on a certain light spring ...
Physics - When a 3.00-kg object is hung vertically on a certain light spring ...
physics - When a 2.60-kg object is hung vertically on a certain light spring ...
Physics - A spring whose spring constant is 650 N/m is compressed 0.600 m. What...
For Further Reading
