Post Utme Physics Past Questions and Answers

Question 1301:

A uniform rod PQ of mass $2kg$ and length of $1m$ is pivoted at the end $P$. if a load of $14N$ is placed on it at the centre, find the force that should be applied vertically upwards at $Q$ to maintain the rod in equilibrium

A. $7N$
B. $28N$
C. $68N$
D. $17N$

Question 1302:

The energy contained in wire when it is extended by $0.02m$ by a force of $500N$ is ____________

A. ${10}^{4}J$
B .10^{3} J\)
B. $10J$
C. $5J$

Question 1303:

What is the acceleration due to gravity ' $g$ ' on the moon, if $g$ is $10m{s}^{-2}$ on the earth?

A. $0.74m{s}^{-2}$
B. $0.1m{s}^{-2}$
C. $10.0m{s}^{-2}$
D. $1.67m{s}^{-2}$

Question 1304:

A $5Kg$ block is released from rest on a smooth plane inclined at an angle of ${30}^{\circ }$ to the horizontal. What is the acceleration down the plane?

A. $5.0m{s}^{-2}$
B. $8.7m{s}^{-2}$
C. $25.0m{s}^{-2}$
D. $5.8m{s}^{-2}[g=10m{s}^{-2}]$

Question 1305:

A rectangular metal block of volume ${10}^{-6}{m}^3$ at $273K$ is heated to $573K$, if the coefficient of linear expansion is $1.2$ $\times {10}^{-5}{K}^{-1}$, the percentage change of its volume is ____________

A. $1.5\mathrm{\%}$
B. $1.1\mathrm{\%}$
C. $0.1\mathrm{\%}$
D. $0.4\mathrm{\%}$