What is the SI unit of force?
ANewton
BJoule
CWatt
DPascal
Answer & Solution
Correct answer: A. Newton
1. Force is defined as a push or pull that changes the state of motion of a body.
2. From Newton's second law, F = m·a, so its unit is kg·m/s².
3. This combined unit is given the name Newton (N) in the SI system.
_Source: Selina Concise Physics ICSE Class 10, Ch 1 'Force' (icsehelp.com chapter extract)_
Related questions
Two children push on opposite ends of a uniform 3 m board pivoted at its centre. One pusheA see-saw of length 3 m is pivoted at its centre. A 40 kg boy sits 1.0 m from the pivot. WA uniform metre rule pivoted at 60 cm carries a 5 N weight at 20 cm. What single force appA heavy wheel is to be lifted using a crowbar. To minimise effort, the fulcrum should be pA uniform beam of length 4 m and weight 60 N rests on two supports, one at each end. A 100A force of 10 N acts at 60° to a 0.4 m long lever, measured from the pivot end. What is thWhich combination of conditions correctly describes equilibrium of an extended rigid body A uniform metre rule weighing 1 N is suspended at the 30 cm mark. A 4 N weight hangs at th