Login
Subject: Physics, asked on 26/5/18

Question no.3
3. A force of 5 kgf is required to cut a metal sheet. A shears used for cutting the metal sheet has its blades 5 cm long, while its handles are 10 cm long. What effort is needed to cut the sheet?

Subject: Physics, asked on 4/5/18

A single fixed pulley and a movable pulley both are separately used to lift a load of 50kgf to the same height Compare the efforts applied.

Subject: Physics, asked on 1/5/18

Plzz answer me this question.
Q.10. Fig. 3.18 below shows a wheel barrow of mass 15 kg carrying a load of 30 kgf with its centre of gravity at A. The points B and C are the centre of wheel and tip of the handle such that the horizontal distance AB = 20 cm and AC = 40 cm.


Find : (a) the load arm, (b) the effort arm, (c) the mechanical advantage, and (d) the minimum effort required to keep the leg just off the ground.
Ans. (a) 20 cm (b) 60 cm, (c) 3 (d) 15 kgf

Subject: Physics, asked on 29/4/18

Plzz answer me this question.

Subject: Physics, asked on 28/4/18

Plzz answer me 7th question.

Subject: Physics, asked on 28/4/18

Plz answer me all parts of ques . 7

Subject: Physics, asked on 15/8/22

A machine is operated by an effort of 80 N acting downward and moving
displacement of 0.15 m. The load of mass 10 kg is raised up by 10 cm. Calculate
M.A, VR, Work input, useful work output and efficiency. (g = 10m/s
2
)

Subject: Physics, asked on 8/9/21

Please answer ....

Subject: Physics, asked on 15/8/21

Find the mechanical advantage

Subject: Physics, asked on 14/3/21

Which of the following is equal with Newton-meter?
(a) Joule
(b) Horse Power
(c) Watt
(d) Pascal

Subject: Physics, asked on 2/2/21

How important is the coarse focus knob in viewing specimens under the compound Microsoft?

Subject: Physics, asked on 21/1/21

A screw jerk whose pitch is 4.4mm is use to raise a body of mass 800kg through a height of 40cm. The length of the turning back of the jerk os 70cm. If the efficiency of the jerk is 60% calculate the:
1. Velocity ratio of the jerk
2. Mechanical advantage of the jerk
3. Effort required in raising the body (g=10m/s, ?=22/7)

Subject: Physics, asked on 30/5/20

Why no work is done when a person is holding a brief case in his hand ? Justify answer with proper reason

Subject: Physics, asked on 16/5/20

Please explain VELOCITY RATIO IN SIMPLE words

Subject: Physics, asked on 20/4/20

What do we mean by movable pulley

56789
What are you looking for?