Question

A block of mass $\sqrt { 3 }$ kg rests on a horizontal frictionless XY plane. What would be the acceleration of the block if it is subjected to two forces as shown in figure ?

• A. 2.5 ms^–2 along Y-axis
• B. 5 ms^–2 along Y-axis
• C. 10 ms^–2along X-axis
• D. 15 ms^–2 along Y-axis

Answer 1

Answer: (B)

5 ms^–2 along Y-axis

Answer 2

a_x = $\frac { 5 - 5 } { \sqrt { 3 } }$ = 0 Ž a_y = $\frac { 10 \sin 60 ^ { \circ } } { \sqrt { 3 } }$ = 5 m/s²Y-axis