A spring with a modulus of 500 newtons per meter is dragged from rest for a distance of 20 cm, what is the amount of work done.
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- A 68.1-kg boy is surfing and catches a wave which gives him an initial speed of 1.60 m/s. He then drops through a height of 1.62 m, and ends with a speed of 8.51 m/s. How much nonconservative work (in kJ) was done on the boy? Answer______ kJNiloWhat mechanical work must you do to lift a uniform log that is 2.5 m long and has a mass of 140 kg from the horizontal to a vertical position?
- (8c7p50) A 0.45 kg mass sliding on a horizontal frictionless surface is attached to one end of a horizontal spring (with k = 725 N/m) whose other end is fixed. The mass has a kinetic energy of 12.0 J as it passes through its equilibrium position (the point at which the spring force is zero). At what rate is the spring doing work on the mass as the mass passes through its equilibrium position? Submit Answer Tries 0/5 At what rate is the spring doing work on the mass when the spring is compressed 0.091 m and the mass is moving away from the equilibrium position? Submit Answer Tries 0/5 This discUSsion is closod Send FeedbacA tired squirrel( mass approximately 1kg) does push up by applying a force to elevate center-of-mass by 5 cm in order to do a 0.50 joule of work. If the tired squirrel does all this work in 2 sec. then determine the powerA 4kg block was released from rest on top of a quarter circular surface. If the vertical height from A to B is given as 4m as shown below, How far from point B will the block reach if the surface A to B is frictionless while B to C has a coefficient of friction of 0.45? answer must be in meters.
- Use Hooke's Law to determine the work done by the variable force in the spring problem. Five joules of work is required to stretch a spring 0.5 meter from its natural length. Find the work required to stretch the spring an additional 0.40 meter.The elasticity of a good is E=0.2. (a) A 3% price increase will cause the demand to -Select--- v by %. (b) A 3% price decrease will cause the demand to --Select--- v by %.A high jumper, falling at 4.0 m/s, lands on a foam pit and comes to rest, compressing the pit 0.40 m. If thepit is able to exert an average force of 1200 N on the high jumper in breaking the fall, what is the jumper'smass? (60 kg)
- Jake bungee jumps from a hot air balloon 55 m above the ground. She knows that 5.0 m of bungee cord will stretch by 1.5 m with her weight. What length of rope should she use to just miss the ground?A tired squirrel (mass 1 kg) does push-ups by applying a force to elevate its center-of-mass by 5 cm. Determine the number of push-ups which a tired squirrel must do in order to do a mere 1.0 Joule of work.Please type answer note write by hend