Answer: Option A, Kettlebell exercise
Explanation: Kettlebell exercise is a form of exercise that help build strength as well as improve range of motion. There are several approaches to kettlebell exercise and it is recommended mostly for athletes.
Answer:
Explanation:
The mechanical advantage with a shorter lever will always be greater than 1.
It is so because with a longer effort arm we need to apply lesser force to lift a unit mass which is at a shorter distance from the fulcrum. This is in accordance with the conservation of moments.
where:
force on the effort arm
force on the load arm
are the lengths of load effort arm and load arm respectively.
So, one factor balances the other keeping the product of the two constant.
And we know that mechanical advantage is :
Answer:
Icy roads
Explanation:
There is so little friction you slide on it way more than other roads. :)
If the two cups are the same/equal in all regards the spoon makes the difference in heat loss. Metal spoon is a good conductor, heat conducts up the spoon handle. Radiant and convection losses occur in the surrounding air. Metal becomes a “heat sink”.
Spoon will feel warmer to the touch than a pottery or foam cup that is not a good conductor.
Answer:
The work done against friction is the work done on an object that overcomes this frictional force allowing the object to move - it doesn't include any extra work used to accelerate an object for example - only the work used to beat the frictional force.
Explanation: