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The mechanical advantage of an inclined place is always:

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Important Questions on Machines

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10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 3 - Machines>EXERCISE-3(B)>Q 1
A boy has to lift a load of mass 50 kg upto a given height of 1 m, what effort is required if he lifts the mass directly? If it is given that the boy can only exert a maximum effort of 250 N, so he uses an inclined plane to lift the load up, then what should be the minimum length of the plank used by him? Take g=10 N kg-1
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Selina Icse Concise Physics For Class 10>Chapter 3 - Machines>EXERCISE-3(B)>Q 2
A coolie uses a sloping wooden plank of length 2.0 m to push up a drum of mass 100 kg into the truck at a height 1.0 m. What is the mechanical advantage of the sloping plank?
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Selina Icse Concise Physics For Class 10>Chapter 3 - Machines>EXERCISE-3(B)>Q 2
A coolie uses a sloping wooden plank of given length 2.0 m to push up a drum of mass 100 kg into the truck at a height 1.0 m. How much effort is needed to push the drum up into the truck? What assumption have you made in arriving at the answer?
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Selina Icse Concise Physics For Class 10>Chapter 3 - Machines>EXERCISE-3(B)>Q 3
A gear system has one wheel with 10 teeth and the other wheel with 50 teeth. Calculate the acquired speed and the acquired torque that you can obtain using them. What will be the gear ratio in each case?
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Selina Icse Concise Physics For Class 10>Chapter 3 - Machines>EXERCISE-3(B)>Q 4
A gear system has the driving wheel of radius 2 cm and driven wheel of radius 20 cm. Find the gear ratio.
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Selina Icse Concise Physics For Class 10>Chapter 3 - Machines>EXERCISE-3(B)>Q 4
A gear system has the driving wheel of radius 2 cm and driven wheel of radius 20 cm. If the number of rotations made per minute by the driving wheel is 100, find the number of rotations per minute made by the driven wheel.
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Selina Icse Concise Physics For Class 10>Chapter 3 - Machines>EXERCISE-3(B)>Q 4
A gear system has the driving wheel of radius 2 cm and driven wheel of radius 20 cm. If the driven wheel has 40 teeth, find the number of teeth in the driving wheel. Given nA=100.
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Selina Icse Concise Physics For Class 10>Chapter 3 - Machines>EXERCISE-3(B)>Q 5
The driving wheel of a gear system is of radius 1 cm and it has 8 teeth. For twelve rotations of the driving wheel, if the driven wheel makes one rotation then find the radius of the driven wheel.