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Q1. A stone has a mass of 5 x 10-4 kg and is wedged into the tread of an automobile tire, as drawing shows. The coefficient of static friction between the stone and each side of the tread channel is 0.7. While the tire surface is rotating at a maximum speed of 1 m/s, the stone flies out of the tread. The magnitude FN of the normal force that each side of the tread channel exerts on the stone is 1.8 N. suppose that only static friction supplies the centripetal force, and find out the radius r of tire.
Q2. A hot-air balloon is rising upward with the constant speed of 3.28 m/s. whilst the balloon is 8.48 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before compass hits the ground?
Two identical spacecraft are to be accelerated by rockets. The first rocket fires with a force 4 times as large as that of the second rocket. The acceleration of the first rocket is how many times as vast as the acceleration of the second rocket.
A super tanker with the mass of 3.36 × 109 kg is moving with a constant velocity. Its engines generate a forward thrust of 4.11 × 105 N. Determine (a) magnitude of the resistive force exerted on the tanker by the water and (b) magnitude of the upward..
What is Horizontal angle of projectile
Find out kinetic energy of the merry-go-round
A street lamp weight 164N. It is supported equally by two wires that form an angle of 129 degrees with each other. What is the tension of each of these wires.
A parallel-plate capacitor is charged to an electric potential of 337 V by moving 3.95×1016 electrons from one plate to the other. How much work is done in charging the capacitor.
Speedboat A negotiates a curve whose radius is 198 m. Speedboat B negotiates a curve whose radius is 290 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
A box is sliding up an incline that makes an angle of 27.7 ° regarding the horizontal. The coefficient of kinetic friction between the box and the surface of the incline is 0.113. The initial speed of the box at the bottom of the incline is 2.27 m/s...
What is tension in the cord
Two ocean liners, each with a mass of 40,000 metric tons, are moving on parallel courses, 92 m apart. What is the magnitude of the acceleration of one of the liners toward the other due to their mutual gravitational attraction? Care for the ships as ..
A 7.40-nC charge is positioned 1.70 m from a 4.80-nC charge. (a) Find the magnitude of electrostatic force that one particle exerts on the other. (b) Is the force attractive or repulsive.
Compute the density of entropically raised element of air
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