Related InterviewSolutions

• How can you increase the mechanical advantage of a see-saw without their changing its length?
• Find the mechanical advantage of the below figure:
• A nut is placed in a nut cracker at 5 cm from the fixed end. If the force experienced by the nut is 100 N when a force of 20 N is applied at the free end of the nut cracker, find the length of the nut cracker.A. 5B. 25C. 15D. 20
• To open the lid of bottle, 50 N force is needed, Siri wanted to open the lid with her maximum effort of 10 N, which of the following openers is suitable for doing it?
• Hari is studying in 6th standard and is interested in science related experiments. While reading simple machines topic from his text book,he started wondering as to which lever a pen belongs to in its writing position? The length of the pen he is using is 14 cm and he holds it at distance of 4 cm from its nib. If the force applied by Hari to write is 0.02 N, the mechanical advantage of the pen is _____ and it is acting as a _____order lever.A. 5, secondB. 0.25, firstC. 2.5, thirdD. 0.243, third
• Which of the following machines is used only to change the direction of input force?A. Inclined planeB. Single-fixed pulleyC. ScissorsD. Screw jack
• which of the following is wrong?A. `I^(st)` order lever `:MAgt1`B. `II^(nd)` order lever `:MAgt1`C. `III^(rd)` order lever `:MAgt1`D. single-fixed pullery `:MA=1`
• Which of the following planes cannot be used to push load to a certain height?A. A plane of slope 2B. A plane of slope `oo`C. A plane of slope 0D. Both (b) and (c)
• What is the efficiency of a simple machine?
• Which of these is not a wheel and axle?A. Screw driverB. TapC. ScrewD. Door knobs