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An object of mass M is held in place by an applied force
Figure P4.43
44. Any device that allows you to increase the force you exert is a kind of machine. Some machines, such as the prybar or the inclined plane, are very simple. Some machines do not even look like machines. For example, your car is stuck in the mud and you can’t pull hard enough to get it out. You do, however, have a long cable that you connect taut between your front bumper and the trunk of a stout tree. You now pull sideways on the cable at its midpoint, exerting a force f. Each half of the cable is displaced through a small angle θ from the straight line between the ends of the cable. (a) Deduce an expression for the force acting on the car. (b) Evaluate the cable tension for the case where θ = 7.00° and f = 100 N.
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Principles of Physics: A Calculus-Based Text
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- A 9.50 kg block is at rest on a horizontal floor, and then you pull it with a cord that exerts a tension force of 12.0 N on the block at an angle of 24.0o above the horizontal. The coefficient of kinetic friction between the block and the floor is 0.055. What is the speed of the block 0.85 s after it starts moving? Nothing I do is working! I only have three more tries to get it right and what should be working is not.arrow_forwardn6 no 2129 1. Consider the der the two-body situation at the righ right. A 25kg crate vera al bas encla beribni rests on an inclined plane and is connected by a cable to a 40kg mass (m2). This second mass (m2) is suspended over a pulley. The incline angle is 30.0° and the surface is frictionless. Draw free- body diagram for mass m, and m₂. Determine the acceleration of the system and the tension in the cable. 996hua 9rt bns 0.08 al signs 9niboni OSI.0 noitaht to insi903 6 26rl ort to noi16191930i1990 sidso srit ni stort has metaya m1 m2arrow_forwardBlock A, with a mass of 10 kg, rests on a 30° incline. The coefficient of kinetic friction is 0.20. The attached string is parallel to the incline and passes over a massless, frictionless pulley at the top. Block B, with a mass of 3.0 kg, is attached to the dangling end of the string. The acceleration of B is: B Select one: O a. Om/s? O b. 0.20 m/s?, up Ос. 28 т/s?, down O d. 0.20 m/s?, down O e. 2.8 m/s2, uparrow_forward
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