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Mechanics | Relativity
For a projectile moving along a parabolic path, the maximum height attained may be:
Mechanics | Relativity
a golf ball rolls up a hilltoward a miniture golf hole with a speed of 2.0m/s and slows at a constant ratw of 0.50m/s
Mechanics | Relativity
A simple manual winch consists of a drum of radius 4.0 cm to
which is attached a handle of radius 25 cm (Fig. 13.28). When
you turn the handle, the rope winds up on the drum and pulls
the load. Suppose that the load carried by the rope is 2500 N.
What force must you exert on the handle to hold this load?
which is attached a handle of radius 25 cm (Fig. 13.28). When
you turn the handle, the rope winds up on the drum and pulls
the load. Suppose that the load carried by the rope is 2500 N.
What force must you exert on the handle to hold this load?
Mechanics | Relativity
A 1916 kg solid sphere with a radius of 1.2 m rolls without slipping down an incline of θ = 29o. If the sphere makes 8 full revolutions in 5.5 seconds.
The rotational inertia of the sphere is?
The frictional force between the incline and the sphere is?
The speed of the center of mass of the Sphere is?
The distance S after 8 full revolutions is?
The rotational inertia of the sphere is?
The frictional force between the incline and the sphere is?
The speed of the center of mass of the Sphere is?
The distance S after 8 full revolutions is?
Mechanics | Relativity
A 2.0 kg mass has 300 J energy. What is the speed of the mass
Mechanics | Relativity
A linear spring has a free length of 56.6 cm. When it is under a hanging load of 22949N, its total length is 1214.3 cm.
- the spring constant k is
- the hanging load that makes it 1749.7 cm long is
- the energy stored in the spring when the extension is 1749.7 cm is
Mechanics | Relativity
A projectile is fired at an angle of /4 to the horizontal with an initial speed of 100 m/s.
Find out parametric equations for the projectile motion using time as parameter. Find out the
height of the object after time t=2 sec.
Find out parametric equations for the projectile motion using time as parameter. Find out the
height of the object after time t=2 sec.
Mechanics | Relativity
7. A surveyor measures the distance across a straight river by the following method (Fig. here given). Starting directly across from a tree on the opposite bank, she walks d = 100 m along the riverbank to establish a baseline. Then she sights across to the tree. The angle from her baseline to the tree is θ = 35.0°. How wide is the river?
Mechanics | Relativity
1. You are trying to move a 500-N crate across a level floor. To start the crate moving, you have to pull with a 230-N horizontal force. Once the crate "breaks loose" and starts to move, you can keep it moving at constant velocity with only 200-N.
a. Draw a free-body diagram for crate just before it starts to move.
b. What forces are acting on the crate just before it starts to move?
a. Draw a free-body diagram for crate just before it starts to move.
b. What forces are acting on the crate just before it starts to move?
Mechanics | Relativity
1. A ball is hanging from a long string that is tied to the ceiling of a train car travelling castward on horizontal tracks. An observer inside the train car sees the ball hang motionless. Draw a clearly labelled free-body diagram for the ball if (a) the train has a uniform velocity, and (b) the train is speed up uniformly. Is the net force on the ball zero in either case? Explain.
