Question

Calculate the force required to compress a spring by $50cm$, if the spring contant (k) $=10N/m$.

• A. $15N$
• B. $25N$
• C. $3N$
• D. $5N$

Answer 1

The correct option is D

$5N$

Magnitude of spring force $F$ = $kx$

Given spring constant $k$ = $10N/m$

Length of compression $x$ = $50cm$ = $0.5m$

$F$ = $kx$ = $10\times 0.5$ = $5N$