Holding a 100 g mass, your palm pushes up with about:
A1 newton
B9 newtons
C5 newtons
D0 newtons
Answer & Solution
Correct answer: A. 1 newton
1. The palm must balance the weight of the mass.
2. A 100 g mass weighs about a tenth of 9.8 newtons.
3. So the upward force is around 1 newton.
4. The answer is 1 newton.
_Source: NCERT Class 9 Science, Ch 6 'How Forces Affect Motion'_
Related questions
Tycho Brahe recorded his observations using:Kepler's three laws describe the motion of:The low escape speed of the moon explains why it has no:The moon's escape speed compared with the earth's is smaller by about:The escape speed for the moon works out to about:The law of periods uses which measurement of the ellipse?By the law of periods, the square of the period is proportional to:The law of areas explains why a planet moves slower when it is: