⦁ A person (m=50 kg) is sitting on top of a wooden crate (m=100kg) on a wooden floor ( ). His friend attaches a large spring to the box and starts to pull horizontally. The spring stretches 1.2 meters, but the box doesn’t move. What is the spring constant (k) of the spring used in the problem?

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?

In starting a game of pinball, the 44.7 g ball rests on a spring, of spring constant k = 18.8 N/m, that has been compressed by 0.0900 m. If the spring is released, how far up the pinball table (which is inclined at 39.0°) does the ball go before rolling back down again? You can assume it doesn't hit any obstacles on the way up.

A 21.0 cm long spring is hung vertically from a ceiling and stretches to 25.9 cm when a 7.00 kg mass is hung from its free end. HINT (a) Find the spring constant (in N/m).  N/m (b) Find the length of the spring (in cm) if the 7.00 kg weight is replaced with a 205 N weight.  cm

A glider with mass m = 0.240 kg sits on a frictionless horizontal air track, connected to a spring with force constant k = 4.70 N/m . You pull on the glider, stretching the spring 0.110 m , and then release it with no initial velocity. The glider begins to move back toward its equilibrium position (x=0). What must the initial displacement of the glider be if its maximum speed in the subsequent motion is to be 2.40 m/s ?

A 215 g object is attached to a spring that has a force constant of 75.5 N/m. The object is pulled 9.25 cm to the right of equilibrium and released from rest to slide on a horizontal, frictionless table.   Calculate the maximum speed vmax of the object.

The friction coefficent for this bar is u 0.4 and both blocks have a mass of 14 kg. When the spring w N a constant of k 60 is compressed 0.1 m and then released, what is the magnitude of both B's m acceleration and the tension of the rope? it d + a A a=? cc UBC Engineering T = N m Select an answer v g2 ав

A bowling ball is attached to a 2.91-meter long cable and hung from the ceiling. The cable is kept taut and the ball is raised to an initial height of 1.73 meters above the classroom floor. It is released from rest and allowed to swing as a pendulum. Determine its speed (in m/s) when it is at a height of 1.17 meters above the floor.

A 2.0 kg breadbox on a frictionless incline of angle θ=40° is connected, by a cord that runs over a pulley, to a light spring of spring constant k = 133 N/kg as shown in the figure below.  The box is released from rest when the spring is unstretched.  Assume that the pulley is massless and frictionless.  How far down the incline (in meters) from its point of release does the box slide before momentarily stopping (kinetic energy = zero at this point).  Use g = 10 N/kg.

An object with mass 0.60 kg is suspended from the ceiling at the end of a 2.0 m long string. When the mass is pulled to the side (at an unknown angle) and released, you measure the speed to be 4.0 m/s at the lowest point of its path. What maximum angle does the string make with the vertical as the object swings up? Note: air resistance can be ignored. Options 69 degrees 77 degrees 47 degrees 61 degrees 54 degrees 50 degrees