In comparing two unequal forces on a rigid body, is it possible to have the larger force produce less torque than the smaller force? a. Yes b. No
In comparing two unequal forces on a rigid body, is it possible to have the larger force produce less torque than the smaller force? a. Yes b. No
A planet has ? the density of earth but 2x the radius. find the surface gravitational force on this planet. (Hint: Earth’s is 10N/Kg)
assume that the force exerted by your arms is the same in both cases
does a planet travel faster when it is nearer the sun or farther from the sun? what is the gravitational attraction between a dating couple sitting 0.152 m apart if the boy weighs 715...
United in si
A box of mass 22 kg slides down a 22o slope with a coefficient of friction of 0.13. Find: a)the weight of the box b) the normal force on the box c) the frictional force...
If a propeller, on a stationary mounting, blows back 36kg of air per second at a speed of 45 knots, what thrust does it produce?
2. if you are using a hammer to hit a stake into the ground why will the acceleration of the hammer be less than the acceleration of the stake? a. force of the hammer...
alicia is pushing a box with a mass of 5 kilograms across a floor. jake is pushing a box with a mass of 10 kilograms across a floor. how much force will jake have to exert on the box he...
A force, F of 25 N is acting in the direction of a = (6,1). a) Find a unit vector in the direction of a. b) Find the Cartesian vector representing the force, f, using your...
At a building site, an iron girder of mass 400 kg is suspended from a crane by a steel cable. Assume that the cable has a circular cross-section of diameter 24 mm. a.What is the tensile force...
Pendulums Written by tutor John Z. If you have ever been on a swing, you have acted like a pendulum. A pendulum can be loosely defined as something hanging that sways from one extreme to the other (oscillates). You have probably heard of grandfather clocks and oscillatory rides from amusement parks as other examples of pendulums. A metronome is right side up but can be described as a pendulum... read more
A 23kg suitcase is being pulled with constant speed by a handle that is at an angle fo 25 degrees above the horizontial. If the normal force exerted on the suitcase is 200N, what is the F applied...
Driving home from school, you spot a ball rolling out into the street. You brake for 1.30s, slowing your 1000kg car from 17.0m/s to 10.0m/s. What was the average force exeerted on your car during...
You plan to fly a model airplane of mass 0.550 kg that is attached to a horizontal string. The plane will travel in a horizontal circle of radius 5.10 m. (Assume the weight of the plane is balanced...
Your moving company is to load a crate of books on a truck with the help of some planks that slope upward 33°. The mass of the crate is 98.0 kg, and the coefficient of sliding friction between it...
A curve of radius 138 m is banked at an angle of 11°. An 762-kg car negotiates the curve at 82 km/h without skidding. Neglect the effects of air drag and rolling friction. Find the following. (a)...
The radius of curvature of a loop-the-loop for a roller coaster is 14.0 m. At the top of the loop, the force that the seat exerts on a passenger of mass m is 0.35mg. Find the speed of the roller coaster...
Suppose you ride a bicycle in a 21.6-m-radius circle on a horizontal surface. The resultant force exerted by the surface on the bicycle (normal force plus frictional force) makes an angle of 13.8°...
A 0.70 kg stone attached to a string is whirled in a horizontal circle of radius 28 cm as in the figure below. The string makes an angle of 30° with the vertical. (a) Find the speed of the stone...