Question Text
Question 7 :
What is the value of resultant force acting on an equilibrium body?
Question 11 :
Work done by the force of gravity is same whether the body comes down from a certain height using stairs or slope or a lift. Is the statement true or false?
Question 12 :
The lever for which the mechanical advantage is less than 1 has the
Question 13 :
A nut ids opened by a wrench of length of 10 cm. If the least force is required 10 N. Find the moment of force needed to turn the nut?
Question 14 :
A body is acted upon by two unequal forces in opposite direction, but not in same line. The effect is that
Question 15 :
A woman draws water from a well using a fixed pulley. The mas of the bucket and water together is 6 kg. The Force applied by the woman is 670 n. Calculate the mechanical advantage.
Question 17 :
In an electric cell while in use, the change in energy is from:
Question 18 :
The unit of moment of force in SI system is :
Question 19 :
A body is acted upon by two unequal forces in opposite directions, but not in same line. The effect is that