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Q1. A 1250 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1960 N crate hangs from the far end of the beam.
Q2. Dan is gliding on his skateboard at 2.0 m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 8.0 m/s. How fast is Dan going as his feet hit the ground? Dan's mass is 60 kg and the skateboard's mass is 5.0 kg.
Q3. A 18 kg box slides 4.0m down the frictionless ramp (30 degrees) shown in the figure , then collides with a spring whose spring constant is 140 N/m. What is the maximum compression of the spring, and at what compression of the spring does the box have its maximum speed?
A single loop of wire with an area of 0.0900 m2 is in a uniform magnetic field that has an initial value of 3.80 T, is vertical to the plane of the loop, and is decreasing at a constant rate of 0.190 T/s.
An aerosol can of whipped cream is pressurized at 440kPa when it's refrigerated at 3 C. The can warns against temperature in excess of 50 C. What is the safest pressure for the can .
What is magnetic flux through the desk surface
Find out the precession period of the axis
What is the potential energy of the elevator
A 6.4kg ball, hanging from the ceiling by a light wire 135cm long, is struck in an elastic collision by a 1.80 ball moving horizontally at 4.20 m/s just before the collision. Find the tension in the wire just after the collision.
A 60.0 kg pole vaulter running at 12.0 m/s vaults over the bar. Assume that the vaulter's horizontal component of velocity over the bar is 1.0 m/s and disregarding air resistance, how high was the jump?
How greatly time elapses before the compass hits the ground
What is moment of inertia
Write down the expression for net torque
The lens has a refractive index of 1.30. Find out the difference Δx in the positions where each crosses the principal axis.
What must be the temperature of the cold reservoir in order to increase the efficiency to 29.0%
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