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You pull downward with a force of 30N on a rope that passes over a disk-shaped pulley of mass 1.2kg and radius 0.075m . The other end of the rope is attached to a 0.69kg mass.
Find the linear acceleration of the 0.69kg mass.
Then the driver sees a red light up ahead at next intersection, and starts slowing down at the constant rate. The car stops at the red light, 180 {rm m} from where it was at t = 0.
Each cable has a length of l = 2.70 -{rm m}. What is the tension T in each of the cables? Use 9.80- {rm m/s}^2 for the magnitude of the acceleration as a result of gravity.
Suppose that the separation between two speakers A and B is 4.40 m and the speakers are vibrating in-phase, What is the largest possible distance between speaker B and the observer,
what is the dimension of gravitational force and what is the dimension of acceleration
The pilot of the spaceship measures the length of the moving ship as 30 meters. Establish its length as measured by a person on earth.
A 100-W lightbulb has a resistance of about 12 ? when cold (20 ?C) and 140? when on (hot). Estimate the temperature of the filament
A novice skier, starting from rest, slides down a frictionless 34° incline whose vertical height is 128 m. How fast is she going when she reaches the bottom.
If coefficient of kinetic friction between the box and the floor is 0.570, how long does it take to move the box 4.00 m, starting from rest.
Four particles with masses 9kg, 4kg, 9kg, and 3kg are associated by rigid rods of negligible mass as shown. Assume the system rotates in the yz plane about the x axis with an angular speed of 9 rad/s. Find out the moment of inertia of the system a..
Two parallel plates, each of area 8.17 cm2, are separated by 6.20 mm, Calculate the amount of the electric charge stored on each plate
What is the initial (horizontal) velocity of the ball.
small metal bead, labeled A, has a charge of 26 . It is touched to metal bead B, initially neutral, then that the two beads share the 26 charge, but not required equally. When the two beads are then placed 5.0 apart, force between them is 5.4×10-..
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