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Hajara
Questions (4)
A force of 200 N acts tangentially on the rim of a wheel 25 cm in radius. (a) Find the torque. (b) Repeat if
the force makes an
29 answers
218 views
It is desired that the outer edee of a grindine wheel 9.0 cm in radius move at a rate of 6.0 m/s. (a) Determine the angular
3 answers
149 views
(100°F-32)×5/9
1 answer
235 views
The sum of the first and second terms of an A.P us 4 and the 10th term is 19. Find the sum of the 5th and 6th terms.
2 answers
1,084 views
Answers (22)
Two people. at the ends of a uniform beam that weighs 400 N. hold the beam at an angle of 25.0° to the horizontal. How arge a vertical force must each person furnish to the beam?
Two people sit in a car that weighs 8000 N. The person in front weighs 700 N, while the one in the back weighs 900 N. Call L the distance between the front and back wheels. The car's center of gravity is a distance 0.400L behind the front wheels. How much
two people sit in a car that weighs 8000 N. The person in front weighs 700 N, while the one in the back weighs 900 N. Call the distance between the front and back wheels. 'The car's center of gravity is a distance 0.4001. behind the front wheels. How much
The following coplanar forces pull on a ring: 200 N at 30.0°, 500 N at 80.0°, 300 N at 240°, and an unknown force. Find the magnitude and direction of the unknown force if the ring is to be in equilibrium.
How large a force is required to accelerate a 1300-kg car from rest to a speed of 20 m/s in a distance of 80 m?
A 4.0-kg wheel of 20 cm radius of gyration is rotating at 360 rpm. The retarding frictional torque is 0.12 Nm. Compute the time it would take to coast to rest
Determine the constant torque that must be applied to a 50-kg flywheel, with radius of gyration 40 cm, to give it a frequency of 300 rpm in 10 s if it's initially at rest.
A certain 8.0-kg wheel has a radius of gyration of 25 cm. (a) What is its moment of inertia? (6) How large a torque is required to give it an angular acceleration of 3.0 rad/s?
A force of 200 N acts tangentially on the rim of a wheel 25 cm in radius. (a) Find the torque. (b) Repeat if the force makes an angle of 40 to a spoke of the wheel.
A flywheel turns at 480 rpm. Compute the angular speed at any point on the wheel and the tangential speed 30.0 cm from the center.
Express 40.0 deg/s in (a) rev/s, (b) rev/min, and (c) rad/s.
2.000 rad/s to deg/s
22.0 rad/s to rpm
1.50 x 10cube rpm to rad/s
72.0 rps to rad/s
487π rad to revolutions
487 rad to revolutions.
50.0 rev to radians.
50.0 rey to radians
An empty 15000-kg coal car is coasting on a level track at 5.00 m/S. Suddenly 5000 kg of coal is dumped Into it from directly above it. The coal instally has zero honzontal velocity. Find the final speed of the Car
A 40000-kg freight car is coasting at a speed of 5.0 m/s along a straight track when it strikes a 30000-kg stationary freight car and couples to it. What will be their combined speed after impact?
How large a force is required to accelerate a 1300-kg car from rest to a speed of 20 m/s in a distance of 80 m?
