The mystery behind the see-saw motion lies in force and genesis of counterforce.
Balanced Teeter totter can be achieved by placing equal masses or length adjustment (betwen pivot and mass) for varying mass.
Explanation:
Teeter totter is a wonderful manifestation of physics principles in crude form.
The working of Teeter totter can be explained as-
The whole set-up (Teeter totter) is balanced on a pivot or fulcrum. When either of its edges/sides is loaded, it moves down under the impact of its mass & gravity (force=m*gravity).
Equal and opposite counterforce acts on the other end of the Teeter totter to balance the effect of the previously applied force. As a result of this, the other side is raised upwards in the air.
As a result of this the net force remains balanced on either side (considering similar masses are on both ends of the Teeter totter)
For a Teeter totter to be balanced there are two conditions-
- When both masses are same- When both sides are loaded with an equal mass, then eventually Teeter totter would come to rest by hanging midway.
- When both masses are different then the occupants need to adjust such way that the heavier mass is near to the pivot while lighter mass is at the edge.
Answer:
thermometer is based on the principle of thermal expansion.
Answer:
1 : 2 cm/km or
One cm represents 2 km.
Explanation:
If 3 cm represents 6 km on the earth, the ratio to consider is: 3 : 6 cm/km which is the same as:
1 : 2 cm/km or
One cm represents 2 km.
Answer:
F = 7.143 kN
Explanation:
given,
time taken to apply break = 1.05 s
car slows down from 15 m/s to 9 m/s
mass of the car = 1250 Kg
force is equal to the change in momentum with respect to time.
F = -7142.85 N
F = - 7.143 kN
Force is acting opposite direction of velocity of car i.e. the sign is negative.