Question

In a new system, unit of mass is 10kg, unit of length is 5m and unit of time is 10s. Then in the new system 5N is equal to :

• A. 5 new units
• B. 10 new units
• C. 15 new units
• D. 20 new units

Answer 1

Answer: (B)

10 new units

Force $=M^1{L}^1{T}^{-2}$

$f_1=5\frac{kgm}{s^2}$

$f_2=\frac{10kg\times 5mt}{{10}^2}$

$\frac{f_1}{f_2}=\frac{5}{\frac{10\times 5}{{10}^2}}=10$ new units