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To find the velocity ratio of a pulley, you must first find the effort and load distances. then you divide the two and there you have you VR (velocity ratio).
Wiki User
∙ 16y ago
Wiki User
∙ 11y agoFriction on pulley can be measured by compare theorhetical acceleration from force act and measure the actual acceleration to find the force done by friction.
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How do you calculate friction equals coefficient of friction X normal force when frictional force and coefficient force are variables not given?
Friction= (coefficient of friction)(normal reaction) If you don't have the friction or the coefficient of it I'm sure you must have been given something else. Could you add the exact question to the discussion ?
How does a movable pulley make work easier?
A fixed pulley is the only pulley that when used individually, uses more effort than the load to lift the load from the ground. The fixed pulley when attached to an unmovable object e.g. a ceiling or wall, acts as a first class lever with the fulcrum being located at the axis but with a minor change, the bar becomes a rope. The advantage of the fixed pulley is that you do not have to pull or push the pulley up and down. The disadvantage is that you have to apply more effort than the load
Will friction in a belt pulley system be reduced when the system is placed in a vacuum?
A vacuum will reduce the air resistance of the rotating pulleys and the movement of the belts. The advantages will however be minimal and hard to measure.Friction is required for the belts to move and be driven by the pulleys. A vacuum will not affect the contact between the belt and pulley.
How do I calculate the velocity of an object which hits a stationary object if I know the mass of both objects and the distance the stationary object was moved what else must I know to calculate?
You need to know the coefficient of static friction and the coefficient of moving friction for both objects. The solution involves solving a differential equation so the math is non-trivial.
How do you find kinetic friction without the coefficient?
by experiment. attach a pulley to the edge of a table. attach a known weight to a string through the pulley to another known weight on the table-top. put the particular surface who's coefficient of friction you wish to measure between the table top and the second known weight set on the table top. allow the first know weight to fall. measure its rate of descent. compare its rate of descent with that of the free fall acceleration of gravity for your particular latitude. you now have all the data you need to figure out the coefficient of kinetic friction. can you do that yourself or do you need to know more?
Does a tire or pulley have more friction?
A tyre has more friction than a pulley.
Does a pulley use friction?
no
Why is friction a nuiscance in a pulley?
It wastes energy. However, SOME friction is also needed, or the pulley would just slip.
What type of friction does a pulley overcome?
sliding
What is prusik minding pulley?
friction hitch
Rosa has designed a pulley system for a school science project She has determined that as the coefficient of friction increases the efficiency of the pulley decreases With a coefficient of friction?
50*
What are the error anayalsis in the atwood machine?
Friction of the pulley
How does a pulley change speed?
calculate speed drive pulley.
What causes the output work of a machine to e less than the input work?
Some of the input force is lost due to friction. If you are using a pulley system then there is friction between the rope and the pulley and there is also friction within the ball bearings of the pulley itself. If you are using an inclined plane there is friction between the plane and the object traveling upon it. In a friction-less world the input is equal to the output.
How do you find the friction of a pulley?
in the wheel because the treads on the wheel rub against the ground,causing friction
How do you calculate the size of pulley?
in inches
What is the mechanical advantage of the pulley system?
The mechanical advantage of the pulley system is the inertia and friction of the unbalanced and balanced forces acting on the mechanical advantage which is part of the pulley system....
