Advertisements
Advertisements
प्रश्न
A mechanic unscrew a nut by applying a force of 140 N with a spanner of length 40 cm. What should be the length of the spanner if a force of 40 N is applied to unscrew the same nut?
Advertisements
उत्तर
Given F1 = 140 N, d1 = 40 cm, F2 = 40 N, d2 = ?
In, both the cases, moment of forces applied are equal
F1d1 = F2d2
d2 = `("F"_1/"F"_2)` d1
d2 = 40 × `140/40` = 140cm
APPEARS IN
संबंधित प्रश्न
Define the term Force?
How is force related to the momentum of a body?
Define Newton (the S.I unit of force)
Which of the following is not the force at a distance?
Newton's second law of motion applicable in all condition is:
(a) `F = (Δp)/(Δt)`
(b) F = ma
(c) `F = M (Δv)/(Δt)`
(d) all three
A body is acted upon by two forces of magnitude F, but in opposite directions. State the effect of the force if the two forces act at two different points of the body at a separation r.
Give two examples to verify that a force tends to change the static condition of a body.
One kilogram-force equals to
Assertion: Force is defined as a push or pulls acting on a body.
Reason: CGS unit of force is the newton.
The trees are greenish. They are greenish at the tip too. How does the water rise upward in a tree or plant against the force of gravity?
