A plane inclined at an angle at 30^o to the horizontal has an efficiency of 50%. The force parallel to the plane required to push a load of 120 N uniformly up the plane is

Similar Questions

A boat travels due east at a speed 40ms-1s across a river flow due south at 30ms-1s. What is the res...

Which of the following phenomena is the practical evidence for the existence of the continual motion...

A plane inclined at an angle of 30o to the horizontal has an efficiency of 60%. The force parallel t...

A radioactive element has a decay constant of 0.077s-1, calculate its half life...

When impurities are added to semi-conductors, the conductivity of the semi-conductor ...

A radioactive isotope has a half-life of 8 days. What fraction of the atoms will remain after 72 day...

Which of the following statements is not a characteristic of a plane progressive wave? ...

Under constant tension and constant mass per unit length, the note produced by a plucked string is 5...

The ice and steam points on a mercury in glass thermometer are found to be 90mm apart. What temperat...

A spring of force constant 500 NM-1 is compressed such that its length shortens by 5cm. The energy s...