A hunter has a slingshot with spring constant equal to 25.3 kg/s². How much time will it take for a launched rock to reach a bird from 12 m afar if the slingshot is stretched at 0.3 m? (Provide full solution of the problem).

As shown in the figure, a 1.50-kg box is held at rest against a spring with a force constant k = 790 N/m that is compressed a distance d. When the box is released, it slides across a surface that is frictionless, except for a rough patch that has a coefficient of kinetic friction u, = 0.400 and is 6.00 cm in length. If the speed of the box is 1.50 m/s after sliding across the rough patch, determine the initial compression d of the spring. cm Equilibrium position v=0' rough patch wwwwwn 6.00 cm

A spring is stretched by 11.5cm. If the spring constant of the spring is 72.8N/m. How much elastic potential energy (in unit of joule) is stored in the spring?

A 66.8-kg bungee jumper is standing on a tall platform (ho = 48.2 m), as indicated in the figure. The bungee cord has a natural length of Lo = 10.0 m and, when stretched, behaves like an ideal spring with a spring constant of k = 51.0 N/m. The jumper falls from rest, and it is assumed that the only forces acting on him are his weight and, for the latter part of the descent, the elastic force of the bungee cord. What is his speed when he is at the following heights above the water: (a) ha = 38.2 m, and (b) hg = 14.5 m? -A Lo =10.0 m ho =48.2 m hA = 38.2 m hp =14.5 m

An archer pulls her bowstring back 0.410 m by exerting a force that increases uniformly from zero to 233 N. (a) What is the equivalent spring constant of the bow? N/m (b) How much work does the archer do in pulling the bow?

The tension in a ligament in the human knee is approximately proportional to the extension of the ligament, if the extension is not too large. If a particular ligament has an effective spring constant of 152 N/mm as it is stretched, what is the tension in this ligament when it is stretched by 0.800 cm?

A mass of 1.2kg is attached to a spring with a constant 12N/m. it is then displaced to a maximum point of 2m. How much time does it take for the block to travel to the point x=1.5m? answer in seconds

A toy bow is used to fire an arrow directly upwards. The spring constant of the bowstring is 17 N/m, and the arrow has mass 0.013 kg. If the bow is drawn 0.15 m before firing, calculate the speed of the arrow when it leaves the bow.

An archer pulls her bowstring back 0.355 m by exerting a force that increases uniformly from zero to 255 N. (a) What is the equivalent spring constant of the bow? N/m (b) How much work is done in pulling the bow? Need Help? Read It

A 2.8 kg box is sliding along a frictionless horizontal surface with a speed of 1.8 m/s when it encounters a spring, (a) Determine the force constant (in N/m) of the spring, if the box compresses the spring 7.5 cm before coming to rest. N/m (b) Determine the initial speed (in m/s) the box would need in order to compress the spring by 1.4 cm. m/s Additional Materials