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The diatortion of the earth's crust is an example of shear on a large scale. A particular rock has a shear modulus of 1.5 time 10 raised to 10. What shear stress is appliad when a 10km layer of rock is sheared a distance of 5 m.?
A 5mm diameter string has original lenght of 2.2m. The string is pulled by a force of 220N. If the length of the string is 2.22m, calculate the stress, strain, and young's modulus of the string
The elastic limit of sgeel is 5.0Pa , find the maximum diameter of steel wire that can support a 700N weight without exceeding its elasgic limit.
Mass of 90 kg is supported by two strings with a=55 degrees and B= 40 degrees. Claculate the tension in the strings.
A 60N block is resting at the top of a 30 degree slope of height 2m. It is attached to a thin walled cyliindrical pulley of mass 5 kg and radius 30 cm by a massless string that unwinds as the block slides downhill. If the acceleration of the block is 2.5 rad/second square, what is the value of the coefficient of kinetic friction? What is the velocity at the bottom of the slope?
A 64 kg painter is standing 2.25 m distance up a ladder that is 3.0m long. If the ladder makes an angle of 69degrees with the ground, what torque does the painter's weight exert on the ladder?
A tire of radius 1.5 ft rolls without slipping along a horizontal track with uniform angular acceleration of 3 rad/s^2 from rest.
(a) How long will it take the point on tire touching the track to acquire an angular frequency of 30 rad/s and how far horizontally could the tire travel at this instant?
(b) What was the tangential speed, centripetal acceleration, and tangential acceleration of the point on tire in part (a)?
A propeller with three blades of mass 12 kg each , length of 1.25m each are 120 degrees relative to each other. If a torque N.m acts on this, what is the moment of inertia of the propeller? How long will it take to reach an angular velocity of 2000rad/s starting from rest?
A 100g ball and 200g ball are connected by a rod with a length of 60 cm. The mass of the rod is ignored. The axis of rotation is located at the center of the rod. What is the moment of inertia of the balls about axis of rotation?
In a seesaw, the person on the left weighs 900N and the person on the right weighs 400 N . If the person on the right is sitting 3 m from the fulcrum and the seesaw is balances, how far must the person on the left be from the fulcrum?
