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What do you understand by the following terms? (a) gear (b) driven wheel (c) driving wheel.
asked
Apr 6, 2019
in
Class 10
by
kratos
machines
class-10
icse
+2
votes
1
answer
The acceleration of the block B in the above figure assuming the surfaces and the pulley P1 and P2 are all smooth
asked
Apr 6, 2019
in
JEE
by
kratos
dynamics
jee
class-10
icse
jee mains
machines
sample machines
+2
votes
1
answer
A pulley system has three pulleys. A load of 120 N is overcome by applying an effort of 50 N.
asked
Apr 4, 2019
in
Class 10
by
kratos
machines
simple machines
class-10
icse
+2
votes
1
answer
The Coriolis effect is the result of A. Pressure gradient B. Earth’* axis of inclination
asked
Mar 31, 2019
in
Class 12
by
kratos
nda
winds
class-11
atmospheric pressure
class-9
class-10
icse
air pressure belts and winds
machines
class-12
+3
votes
1
answer
Define an Inclined plane.
asked
Mar 30, 2019
in
Class 10
by
kratos
machines
class-10
icse
+1
vote
1
answer
Fig 3.17 below shows a lever in use.
asked
Mar 30, 2019
in
Class 10
by
kratos
machines
class-10
icse
+3
votes
1
answer
Mechanical advantage (M.A), load (L) and effort (E) are related as: (a) M.A. = × E
asked
Mar 19, 2019
in
Class 10
by
kratos
machines
class-10
icse
+2
votes
1
answer
A uniform plank of a see-saw is 5m long and supported at its centre.
asked
Mar 19, 2019
in
Class 10
by
kratos
machines
class-10
icse
+1
vote
1
answer
Draw a diagram of a lever which is always used as a force multiplier. How is the effort arm related to the load arm in
asked
Mar 17, 2019
in
Class 10
by
kratos
machines
class-10
icse
+3
votes
1
answer
Rose is sledding down an ice-covered hill inclined at an angle of 15° with the horizontal.
asked
Mar 17, 2019
in
JEE
by
kratos
work
energy
jee
class-11
class-10
icse
force
jee mains
power
machines
trigonometric functions
+1
vote
1
answer
Pliers and scissors are levers of the same order. (a) Which amongst them has a mechanical advantage less than one?
asked
Mar 17, 2019
in
Class 10
by
kratos
machines
class-10
icse
+3
votes
1
answer
Why is less effort needed to lift a load over an inclined plane as compared to lifting the load directly?
asked
Mar 15, 2019
in
Class 11
by
kratos
work
class-11
energy and power
class-10
icse
force
machines
+3
votes
1
answer
A cook uses a ‘**** tong’ of length 35 cm to lift a piece of burning coal of mass 200 g.
asked
Mar 15, 2019
in
Class 10
by
kratos
machines
class-10
sample machines
icse
+2
votes
1
answer
A machine displaces a load of 125kgf through a distance 0. 30m, when an effort of 12.5kgf acts through a distance of 4.0m.
asked
Mar 15, 2019
in
Class 10
by
kratos
machines
simple machines
class-10
icse
+2
votes
1
answer
The lever for which the mechanical advantage is less than 1 has: (a) fulcrum at mid-point between
asked
Mar 14, 2019
in
Class 10
by
kratos
machines
class-10
icse
+2
votes
1
answer
A uniform metre scale is kept in equilibrium when supported at the 60cm mark and a mass M is suspended from
asked
Mar 14, 2019
in
Class 10
by
kratos
work
energy and power
class-10
icse
force
machines
sample machines
+3
votes
1
answer
A nut can be opened by a lever of length 0.25m by applying a force of 80N.
asked
Mar 13, 2019
in
Class 10
by
kratos
work
energy and power
class-10
icse
force
machines
+2
votes
1
answer
A system of pulleys consisting of a fixed block and movable block (Fig.) is in equilibrium.
asked
Mar 13, 2019
in
JEE
by
kratos
statics
jee
class-10
icse
jee mains
machines
+1
vote
1
answer
A gear system is used for : (a) gain in speed (b) gain in torque (c) change in the direction of rotation
asked
Mar 10, 2019
in
Class 10
by
kratos
machines
class-10
icse
+2
votes
1
answer
Write an expression for the mechanical advantage of an inclined plane in terms of its length I and vertical height h.
asked
Mar 8, 2019
in
Class 10
by
kratos
icse
machines
class-10
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