Simple machine

Ma of simple machine is given by

• Load/effort

• Effort/load

• Ed/ld

• Ld/ed

VR of a Pulley is

• No. Of Pulley used

• Ed/Ld

• R/r

• l/h

Efficiency of an ideal machine is

• 90%

• 99%

• 100%

• 99.9%

The SI unit of moment is

• Nms

• Nm

• Mn

• Newton

The product of moment arm and force is called

• Momentum

• Moment

• Force

• None

The VR of an inclined plane is given by

• l/h

• h/l

• R/r

• Ed/ld

When moment arm increases

• Moment increases

• Moment decreases

• None

• All

Law of moment indicates

• Sum of clockwise moment = sum of anti clock wise monent

• Effort distance = load distance

• None

• All

The efficiency of a simple machine

• Is equal to 100%

• Is more than 100%

• Always less than 100%

• All

Some of the applied effort in simple machibe is lost in the form of

• Light energy

• Heat energy

• Magnetic force

• Friction